Intercommunicating telephone.



W. W. HENRY.

INTERQOMMUNIOATING TELEPHONE.

APPLICATION FILED JUNE 19, 1914.

Patented M21119, 1915.

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APPLICATION FILED JUNE 19, 1914.

Patented Mar. 9, 1915.

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UNITED STATES PATENT OFFICE.

WILLIAM WEIR HENRY, 0F WOLLASTON', MASSACHUSETTS, ASSIGNOR TO H. COUCH CO. INC., OF ATLANTIC, MASSACHUSETTS.

INTERCOMMUNICATING TELEPHONE.

Specification of Letters Patent.

Patented Mar. 9, 19 15.

Application filed June 19. 1914. Serial No. 846,152.

To all whom it may concern Be it known that 1, WILLIAM I WEIR HENRY, a citizen of the United States, residing at Wollaston, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Intercommunicating Telephones, of which the following is a specification.

This invention relates to telephones of the inter-communicating type and has special reference to the assembling of all the mechanism connected with the various circuits upon and within a formed block composed of insulating material, which block, being.

secured against and partially within a wallplate formed of sheet metal, renders possible the making up of a very compact and serviceable unit where economy of space and low cost are desirable. This block, which is preferably molded, has the gong mountings and cord bushing formed integral therewith, and these serve as pilots for quick assembly upon the pressed wall-plate. Also, the various terminals, the bus-bar and the bell-magnet frame are lodged within closefitting recesses formed in the blockand thus but one fastening bolt is required for each piece. Other advantages, both of construotion and use, will appear in the detailed description of the illustrated embodiment of my invention which accompanies and forms part of this specification, and in which Figure 1 is a front-view of one of my complete units. Fig. 2 is a sectional elevation on line 22 of Fig. 1. Fig. 3 is a rear view, with box cover removed. Fig. is a sectional elevation on line 4:--4: of Fig. 3. Fig. 5 is a sectional elevation on line 5-5 of Fig. 3. Figs. 6 and 7 are, respect1vely, rear and front views of the molded block. Fig. 8 is a front View of the pressed'wallplate. Figs. 9, 10 and 11 are sections on the various lines 99, 10 -1O and 11-11 of Figs. 6 and 7. Fig. 12 is a detail. I

The wall-plate 1, preferably of sheet brass, is molded or stamped to give the appearance of a flat plat of added thickness, with beveled edges 2 and countersunk screw h0les 3 and 4, the former, 3, being adapted to receive screws 5 which secure the entire unit telephone to the wall of a building, and the latter, 4, being adapted to receive bolts 6 for securing the molded block, 10 to plate 1. In addition to the countersunkopenings 3 and 4, plate 1 has a number of other open- 21 on block 10, whereby the said block is quickly and accurately fitted to plate 1, ready to receive-the fastening bolts 6 and also two others 7 which passthrough holes l i in plate 1 and assist in securing the block to the plate. Near the bottom of plate 1 are shown two round holes 15 adapted for the pro ection therethrough of the push buttons 22 and '23. Above holes 15, I form a pair of rectangular openings 16 in plate 1 so as to reveal the lettered portions of a strip 2-1 which is concealed behind the plate. A slot 17, to the left of openings 15, permits the play of hook 25 therein, in a usual man'- ner. Near the top of plate 1, I form an openmg 18 for the clapper-stem 26 and, above and below, this opening 18 is enlarged, as at 19, to permit the securing in place of a clapper-guard 27, as will be later ex lained.

' eferring now to Figs. 6, 7, 9, 10 and 11, and incidentally to Figs. 3 and 4, block 10 has, in addition to the large central opening 30, a series of recesses on both faces and on the two long edges, which will now be referred to in detail- On the rear face, Fig.

6, the recesses 31 are adapted to receive the line terminals 32 and 33 (but two of the latter. being shown) and recesses 34 are formed to receive the ringing terminals 35 and 36, (but two being shown.) Bus-bar 37 is adapted to fill recess 38, the switch base plate 39 1s seated in recess 40 and the magnet base 41 occupies recess 42. There isalso a recess 43 for housing the receiver cord 4.4 and two countersunk through openings 4:5 for securing the transmitter to block 10.

On the front of block 10, Fig. 7, will first be noticed a large recess 50 for housing certain bolt heads and connectors, a flat, rectangular recess 51 for the strip 24, a recess 52 for the switch bolt and the recess 53 in gong-posts 20, by means of which the gongs 55 are secured by screws 56. At the sides of block 10, I preferably form two shallow recesses 57 to receive the spring clips 58' on the cover box 59. In addition to the recesses and holes noted, block 10 is also formed with through holes 60 for the push buttons 22 and 23, the slot 61 for hook 255, the opening 62 for cord 44, the hole 63 for the clapper stem and the various bolt holes for securing the terminal plates, bus-bar, switch base and bell magnet frame in place. The bell magnet 65 is. secured to the frame 41, the switch 66 is mounted on switch base 39 and a ground wire terminal 67 is provided in bus-bar 37.

The specific form of wiring illustrated need not be described in detail, as the only feature of novelty therein contained is that of inter-changeability, whereby the circuits may be altered to produce various results without changing the form of insulated block 10. As noticed, provision is made for three terminals for each of sockets 31 and. 34:,

where but two are illustrated, but in this case, I make use of one of the openings 60 for a fastening bolt 6. An ordinary receiver 70 is indicated in Fig. 1.

The clapper guard 27 is formed with two bent ears 71 adapted for insertion through openings 19 and after block 10 is assembled upon' plate 1, guard 27 is locked in position.

By making wall plate 1 of pressed metal, a new form of attachment for the trans mitter is necessary, that illustrated being de scribed as follows :The transmitter 71 is mounted upon a bridge 7 2, the feet of which are adapted to lie within the opening 11 in plate 1. The diaphragm 7 3, which is slightly larger in diameter than the opening 11, is mountedin front of the bridge 72 and also plate 1 and is held in place by a spun disk 74 which carries a threaded socket for an ordinary mouth-piece 75. Back of the feet of bridge 72 and thus inside or back of wall plate 1 I mount an annular ring 76, the difference of whose two radii spans the periphery of opening 11. Bolts .77 passing through disk 74, diaphragm 73, the feet of bridge 72, which may be slotted, and ring 76 hold all firmly in place, the

bolts lying within opening 11 but adjacent to the edge thereof. In addition to bolts 77, I prefer to screw the transmitter mechanism independently to block 10 by screws 78, set in openings 45 and screw threaded into ring 76.

The terminals 32 and 33 are held in place by screws 80, both of which, (as well as the third one, not shown) are adapted at their that my unit, by its compactness, is well adapted for use in thin partition walls where it is desirable to provide a box which shall not project therefrom unduly, and, when mounted, the wall plate 1 has every appearance of solidity and the general neat ness and finish of the exposed parts provides an appearance which might be classed with wall ornaments. Again, by providing a molded insulated block, the ease and certainty of assembling and the lessened liability to any disarrangement of the parts furnish a unit which represents the most advanced state of the art known to me.

I do not limit myself to the precise form of construction shown.

hat I claim is 1.. In telephones of the inter-communicating type, a wall plate so formed of thin material as to give the appearance of a flat plate of added thickness and a molded block of insulating material adapted to be secured to and partially within said wall plate, said block being provided with integrally formed gong support and cord bushing adapted to protrude through suitable",- openings in said wall plate; in combination with means for attaching said block to said wall. plate.

2. In telephones of the inter-communicating type, a wall plate so formed of thin material as to give the appearance of a fiat plate of added thickness and a formed block of insulating material adapted to be secured to and partially within said wall plate, said block being provided with integrally formed gong support and cord bushing adapted to protrude through suitable, close fitting openings in said wall plate, and means for attaching said block to said wall plate; in combination with a cover box of thin material and provided with a plurality of spring snaps adapted to automatically engage suitable recesses in said block for the purpose of uniting said block and said box.

3. In telephones of the inter-communicating type, a molded block of insulating material and provided with a variety of recesses and bolt holes, the former adapted to snugly receive and hold against lateral movement a series of metal connectors and the latter, one for each connector, being adapted to house the bolts for retaining said connectors within said recesses, a wall plate adapted for mountin close-fitting openings for suitable gongsup port and cord bushing, and suitable gong support and cord bushing integrally formed on said block and adapted to project through close fitting on said block and provided withv Y said openings; in combination with means for securing said block to said wall plate.

4. In telephones of the inter-commumcating type, a wall plate of sheet metal and provided with a suitable opening for mounting the transmitter mechanism, a spun metal disk adapted to receive the mouth-piece, the diameter of said disk being larger thanthe diameter of said opening, and an annular ring, the difference of whose radii spans the periphery of said opening, said disk and said ring being adapted for mounting on opposite surfaces of said wall plate and over said opening, thereby inclosingthe mountings for said transmitter mechanism; in combination with bolts for uniting and clamping the whole together, said bolts being so positioned as to pass through said disk and said ring and said opening, thereby engaging the periphery of the latter to prevent lateral movement of said disk with respect to said opening.

5. In telephones of the inter-communicating type, a wall plate of sheet metal and provided with a suitable opening for mounting the transmitter mechanism, means whereby said transmitter mechanism may be mounted on said wall plate and secured against lateral or perpendicular movement with respect to said plate, and a formed block of insulating material and adapted for the mounting thereon of the switch, bellmagnet and connectors, means for detachably securing said block to said wall plate, and means for securing said transmitter mechanism against rotation with respect to said plate, said means comprising an attachment between said block and said transmitter mountings.

6. In telephones of the inter-communicating type, a wall plate of sheet metal provided with an opening for mounting the bell clapper guard, aformed block of insulating material and adapted for the mounting thereon of the bell-magnet, switch and connectors, means for securing said block to said wall plate, and a bell clapper guard provided with two bent ears adapted to en gage said opening, and means whereby said guard is held against removal through the agentiy of said" first means.

7. n telephones of the inter-communicating type, a formed block of insulating material rovided with recesses and bolt holes, the ormer adapted to hold suitable terminals, magnet and switch mountings against lateral movement with respect to said block,

the latter, one for each of said recesses, being adapted to house certain bolts which may be used to prevent perpendicular movement of said terminals, magnet and switch mountings with respect to said block, and bosses, adapted for the support of a suitable gong and for the passage of the cord, said bosses being formed integral with said block( In testimony whereof, I have afiixed my signature, in the presence of two Witnesses.

WILLIAM WEIR HENRY. 

